Improvement in loom-shuttles



l. F. MAY N AR D.

l Loom-Shuttles.

No.l50,174. ParentedAprix2a,1sf/'4.

a/141%): v P6/2 NrrEn STATES PATENT QEFIGE.

IMPROVEMENT IN LOOM-SHUTTLS.

Specification forming part of Letters Patent N0. 150,174, dated April 28, 1874; application liled May 2.2, 1873.

To all whom it may concern:

Be it known that I, ISRAEL F. MAYNARD, of Nashua, New Hampshire, have invented certain Improvements in Veavers7 Shuttles, of

the thread lling in the operation of weaving,

either by hand or power looms.

To more fully explain the nature of my invention, Figure l (drawn to half of full size) represents a top view of a wooden shuttle, with the cop of woothread a a cut through longitudinally, exposing the spindle b b in its horizontal position. l

In sectional Fig. 2 the spindle is thrown up ward, exposing` to view the peculiar angularshaped head c c o, the small circle indicating the hinged axis or pivot of the spindle.

In Fig. 3 the spindle is represented oi' full size, and is shown formed of a long, neatly tapering rigid half, b b, formed ilat on the inner side and rounding on the off side. To this rigid half is neatly welded a tapering, halfround, iiexible or springlike half, b2 b2, with curved or slightly-bent butt end b3, the rigid halt' being securely attached to, or formed with, the triangular head o c o, through one side of which is formed a groove or seat, d. The small circle represents the hole through which passes a suitable pivot or axis pin, which holds the spindle in its place, as shown in Figs. l and 2.

Fig. 4 represents a top and edge view of a full-sized reversible spring, somewhat curved, as shown.

Fig. 5 represents Aa top View of the same spring, bothviews showing a circular hole for the insertion of a suitable screw to hold the spring in position, as shown in Fig. l, at lefthand end of shuttle. Such springs can be readily struck out of suitable flexible metal, and having two arms, J J, are reversible, so that when one end wears too much the other end can be substituted.

Fig. 6 represents a fullsized piece of plate metal of the shape shown, about one-halt' of its length being beveled, as at c c, the two small circles (not lettered) indicating holes through which pass two suitableI wire pins to hold the plate inposition within a mortise formed in one end of the shuttle, as shown in Fig. 1. Letter j' indicates the plate in position, and letter g marks a smaller, thinner side plate, used as a guard to prevent the wear ofthe mortise.

Then the spindle is in its upright position to receive or remove the cop, the bent portion of the spring b2 will be clear of side plate f, and the spring will be relaxed. The act of depressing it to its weavin g position will carry the end .of the bent portion against the beveled face of the side plate, force the elbow of spring b2 against the rigid arm b, and by means of that leverage thus gradually distend the spring until the bent end passes beyond the bevel, when the spring will be held at its distention. The spring being distended and held by side pressure upon its bent end, when the spindle is in its weaving position there will be no tendency to throw the spindle up out of its position, as is the case where the distention of the spring is caused by back-pressure upon the end.

The small tube (not lettered, but shown inserted on inside of the recess or mortise of the shuttle, as in Figs. l and 2) is the orifice through which the thread of the cop passes.

The operation of my improved spindle is as follows, viz: To insert the cop in the shuttle the spindle is thrown up, as in Fig. 2, the letters b b and dotted lines showing the spindle, the cop a a in said position being readily slipped over the spindle, or taken ofi' when desired; but when the cop and spindle are pushed or turned down in position, as in Fig. 1, the butt end b3 of the ilexible half b2 b2 strikes or presses against the bevel surface e c of the plate, Fig. 6, and in pressing against the flexible part bulges or swells out in shape of a slight curvev or bow, Fig. l. This bulge pressing on the i11- ner circumference of the short paper quill and the body of the cop, holds the cop in secure position, thus preventing the cop from slipping oit or turning on the spindle. The curved butt end b3 ofthe flexible spring closes into the channel or recess d of the head o c `c, Fig. 3. Y

By the expanding or opening out, and' also the closin g or compressing together ofthe flexible or spring part b2 b2 ot' the spindle, Fig. 3,

the quill or sheath over which the Woof-thread In a shuttle-spindle, the combination of the of the cop is Wound, is not liable to mash or rigid arm b with the elbowed spring-arm b2 and break, but is kept in shape; consequently the beveled side plate f, when arranged and opereop is readily slipped on in place, as in Fig'. 2, ating substantiallyas andfor the purpose speciand when down in position is retained or held ed.

securely, as in Fig. l, the thread unwinding l ISRAEL FRANCIS MAYNARD. with great regularity and equalityof tension. Vitnesses:

What I claim as new, and desire to have se- T. A. MCQUAID,

cured by Letters Patent, is A. A. BURDITT. 

